CGAL users discussion list

[Mahmood NT <>]

>The fourth argument should be the kernel and not another point

>CGAL::bounded_side_2( vertices.begin(), vertices.end(), Rat_point_2 (1,
 2), Rat_kernel() );

Thanks, it solved
 
Mahmood NT



----- Original Message ----
From: Andreas Fabri 
<>
To: 

Sent: Saturday, December 1, 2007 3:57:33 PM
Subject: Re: [cgal-discuss] error on using "CGAL::bounded_side_2()"


Mahmood NT wrote:
> Hi,
> I have the following definitions for a polygon.
> typedef Traits_                                         Traits_2;
> 
>  typedef typename Traits_2::Rat_kernel      Rat_kernel;
> 
> typedef typename Rat_kernel::Point_2       Rat_point_2;
> typedef Polygon_2<Rat_kernel>                Rat_polygon_2;
> std::list<Rat_point_2>                              vertices;
> 
> In a loop I will push back the points like this:
> vertices.push_back (Rat_point_2 (x, y));
> 
> Then I define polygon:
> Rat_polygon_2        pgn (vertices.begin(), vertices.end());
> 
> Now, when I want to use "CGAL::bounded_side_2" I get compilation
 error:
> CGAL::bounded_side_2( vertices.begin(), vertices.end(), Rat_point_2
 (1, 2), Rat_point_2() );


The fourth argument should be the kernel and not another point

CGAL::bounded_side_2( vertices.begin(), vertices.end(), Rat_point_2 (1,
 2), Rat_kernel() );

andreas

> 
> Why?  I have to say, I use CGAL 3.2. Does it matter?
> I am looking for something like: "CGAL::bounded_side_2( pgn,
 Rat_point_2 (1, 2) );" Is it possible?
> 
> the error message is:
> include/CGAL/Polygon_2_algorithms.C: In function `CGAL::Bounded_side 
>    CGAL::bounded_side_2(ForwardIterator, ForwardIterator, const
 Point&, const Traits&) [with ForwardIterator =
>    std::_List_iterator<CGAL::Point_2<CGAL::Simple_cartesian<Rational>
 >, 
>    CGAL::Point_2<CGAL::Simple_cartesian<Rational> >&,
 CGAL::Point_2<CGAL::Simple_cartesian<Rational>
>    >*>, Point = Rat_point_2, Traits = Rat_point_2]':
> 
> VVc_demo.cpp:607:   instantiated from here
> .../CGAL-3.2/include/CGAL/Polygon_2_algorithms.C:300: error: no type
>    named `Compare_x_2' in `class Rat_point_2'
> .../CGAL-3.2/include/CGAL/Polygon_2_algorithms.C:301: error: no type
>    named `Compare_y_2' in `class Rat_point_2'
> .../CGAL-3.2/include/CGAL/Polygon_2_algorithms.C:302: error: no type
>    named `Orientation_2' in `class Rat_point_2'
> VVc_demo.cpp:607:   instantiated from here
> .../CGAL-3.2/include/CGAL/Polygon_2_algorithms.C:304: error: `
>    compare_y_2' undeclared (first use this function)
> .../CGAL-3.2/include/CGAL/Polygon_2_algorithms.C:304: error: (Each
>    undeclared identifier is reported only once for each function it
 appears
>    in.)
> .../CGAL-3.2/include/CGAL/Polygon_2_algorithms.C:317: error: `
>    compare_x_2' undeclared (first use this function)
> 
> 
> Thanks,
> 
> Mahmood NT
> 
> 
> 
> 
> 
> 
>      
 
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